CN205430266U - Passive reticle transmission system of gigabit based on wavelength devision multiplex - Google Patents
Passive reticle transmission system of gigabit based on wavelength devision multiplex Download PDFInfo
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- CN205430266U CN205430266U CN201520946340.3U CN201520946340U CN205430266U CN 205430266 U CN205430266 U CN 205430266U CN 201520946340 U CN201520946340 U CN 201520946340U CN 205430266 U CN205430266 U CN 205430266U
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Abstract
The utility model provides a passive reticle transmission system of gigabit based on wavelength devision multiplex, it sets up on the circuit between local side light line termination and customer end optical network unit for transmission signal on an optic fibre, it includes: a WDM -PON device for to the long conversion of light signal wave train, first closing / wave separator, second close / wave separator for close the ripples to the signal and conciliate the ripples, the 2nd WDM -PON device for to the long conversion of light signal wave train. The utility model discloses the passive reticle transmission method of gigabit based on wavelength devision multiplex has still been provided, need not reform transform original circuit, do not need to spread again the optical cable, only need to increase few equipment on original circuit, utilize wavelength conversion and passive optical network's wavelength devision multiplex, the signal transmission of a plurality of different wavelength is supported in the realization in same optical cable, the user's dilatation number that can take an optical cable times, under the not enough condition of optical cable resource, the huge engineering of being under construction has again been avoided.
Description
Technical field
This utility model relates to light net transmission technique field, particularly relates to a kind of G bit passive light net based on wavelength-division multiplex transmission system.
Background technology
Developing rapidly of light pricker communication, optical communication network becomes the basic platform of modern communication networks.Along with the progressively deployment of country's FTTH (fiber entering household) net, fiber optic network constantly expands in the scale of China, and number of users increases the most rapidly.At present data service becomes explosive growth trend so that transmission network transmission network bandwidth demand increases, and current OLT device one can the most most 54 ONU, and actually one community user is often beyond this quantity, this situation, generally requires the quantity increasing OLT at local side, and accordingly increases number of fibers, and a lot of community, often when building, lay optical cable, if the most again laid, difficulty of construction, cost is the hugest.
Therefore, need one on the market badly and both can need not again lay optical fiber, the equipment based on GPON (gigabit passive optical network) transmission plan of growing user's request can be met again.
Utility model content
The purpose of this utility model is to overcome defect of the prior art, due to developing rapidly of photoelectric device, the maturation of particularly EDFA and commercialization, WDM technology is can the simplest Optical multiplexing technology of commercialization, this utility model is based on wavelength-division multiplex technique and proposes a kind of G bit passive light net transmission system, it is arranged on the circuit between local side optical line terminal and client optical network unit, for transmitting signal on an optical fiber, including: a WDM-PON device, for optical signal is carried out wavelength convert；First co-/demultiplexer, the second co-/demultiplexer, for carrying out conjunction ripple or solving ripple to signal；2nd WDM-PON device, for carrying out wavelength convert to optical signal.
In the G bit passive light net transmission system based on wavelength-division multiplex that the utility model proposes, a described WDM-PON device includes: the first single fiber bi-directional ONU module, the first single fiber bi-directional wavelength-division OLT module and the first data shaping processing module；Described first single fiber bi-directional ONU module is connected with at least one described local side optical line terminal, for upward signal and downstream signal are carried out opto-electronic conversion；Described first single fiber bi-directional wavelength-division OLT module is connected with described first co-/demultiplexer, for upward signal and downstream signal are carried out opto-electronic conversion；Described first data shaping processing module is connected with described first single fiber bi-directional ONU module and described first single fiber bi-directional wavelength-division OLT module respectively, it is achieved the Clock Extraction of data, signal shaping；
In the G bit passive light net transmission system based on wavelength-division multiplex that the utility model proposes, described 2nd WDM-PON device includes: the second single fiber bi-directional ONU module, the second single fiber bi-directional wavelength-division OLT module and the second data shaping processing module；Described second single fiber bi-directional ONU module is connected with described second co-/demultiplexer, for upward signal and downstream signal are carried out opto-electronic conversion；Described second single fiber bi-directional wavelength-division OLT module is connected with described second co-/demultiplexer and described client optical network unit respectively, for upward signal and downstream signal are carried out opto-electronic conversion；Described second data shaping processing module is connected with described second single fiber bi-directional ONU module and described second single fiber bi-directional wavelength-division OLT module respectively, it is achieved the Clock Extraction of data, signal shaping.
In the G bit passive light net transmission system based on wavelength-division multiplex that the utility model proposes, described first co-/demultiplexer includes: CWDM wave filter, it is achieved the conjunction ripple of signal or solution ripple.
In the G bit passive light net transmission system based on wavelength-division multiplex that the utility model proposes, described second co-/demultiplexer includes: CWDM wave filter, it is achieved the conjunction ripple of signal or solution ripple.
In the G bit passive light net transmission system based on wavelength-division multiplex that the utility model proposes, described second single fiber bi-directional wavelength-division OLT module is connected with described client optical network unit by beam splitter.
This utility model also proposed a kind of G bit passive light net transmission method based on wavelength-division multiplex, comprises the following steps:
Step one: the optical signal received is carried out opto-electronic conversion, the Clock Extraction of data, signal shaping and electro-optic conversion, forms the signal of multiple different wave length；
Step 2: the signal of multiple described different wave length is formed one by wavelength-division multiplex and closes ripple signal, transmit described conjunction ripple signal；
Step 3: after receiving described conjunction ripple signal, becomes the signal of multiple described different wave length by demultiplexing by described conjunction ripple signals revivification；
Step 4: the signal of multiple described different wave length is carried out opto-electronic conversion, the Clock Extraction of data, signal shaping and electro-optic conversion, is reduced into described optical signal.
The beneficial effects of the utility model are:
Existing PON technology can only realize an optical fiber and connect an OLT interface, transmission of one line PON signal, multichannel PON signal cannot be realized transmit in same optical fiber, and multi-path light net transmission equipment of the present utility model, make full use of the low-loss band of optical fiber, increasing the transmission capacity of optical fiber, the physical limits making an optical fiber transmit information factors two to several times.In same optical fiber, transmit the compatibility of the ability of two or more nonsynchronous signal, beneficially digital signal and analogue signal, unrelated with data rate and modulation system, in the line between can take out flexibly or add channel.To built fibre system, the optical cable that the core number of laying is few especially in early days, need not original circuit is transformed, it is not required to again spread optical cable, only need to increase few equipment (2 co-/demultiplexers, 2 WDM-PON devices) on original circuit, realize multiple one way signal or original system is made big change by transferring without of two-way signaling, there is stronger motility.Substantially reduce the number the usage amount of optical fiber, greatly reduce construction cost, due to number of fibers few, when a failure occurs, recover get up to facilitate the most rapidly.In system, active equipment is greatly decreased, and which improves the reliability of system
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model G bit passive based on wavelength-division multiplex light net transmission system.
Fig. 2 is the schematic flow sheet of this utility model G bit passive based on wavelength-division multiplex light net transmission method.
Detailed description of the invention
In conjunction with specific examples below and accompanying drawing, the utility model is described in further detail.Implementing process of the present utility model, condition, experimental technique etc., outside the lower content mentioned specially, be universal knowledege and the common knowledge of this area, this utility model is not particularly limited content.
As shown in Figure 1, the utility model proposes a kind of G bit passive light net based on wavelength-division multiplex transmission system, it is arranged on the circuit between local side optical line terminal and client optical network unit, for transmitting signal on an optical fiber, including: a WDM-PON device 1, for optical signal is carried out wavelength convert.Wherein, first co-/demultiplexer the 2, second co-/demultiplexer 3, conciliate ripple for signal being carried out conjunction ripple.2nd WDM-PON device 4, for carrying out wavelength convert to optical signal.
In the G bit passive light net transmission system based on wavelength-division multiplex that the utility model proposes, a WDM-PON device 1 includes: the first single fiber bi-directional ONU module the 11, first single fiber bi-directional wavelength-division OLT module 12 and the first data shaping processing module 13.Wherein, the first single fiber bi-directional ONU module 11 is connected with at least one local side optical line terminal, for upward signal and downstream signal are carried out opto-electronic conversion.First single fiber bi-directional wavelength-division OLT module 12 is connected with the first co-/demultiplexer 2, for upward signal and downstream signal are carried out opto-electronic conversion.First data shaping processing module 13 is connected with the first single fiber bi-directional ONU module 11 and the first single fiber bi-directional wavelength-division OLT module 12 respectively, it is achieved the Clock Extraction of data, signal shaping.
In the G bit passive light net transmission system based on wavelength-division multiplex that the utility model proposes, the 2nd WDM-PON device 4 includes: the second single fiber bi-directional ONU module the 41, second single fiber bi-directional wavelength-division OLT module 42 and the second data shaping processing module 43.Wherein, the second single fiber bi-directional ONU module 41 is connected with the second co-/demultiplexer 3, for upward signal and downstream signal are carried out opto-electronic conversion.Second single fiber bi-directional wavelength-division OLT module 42 is connected with the second co-/demultiplexer 3 and at least one beam splitter 5 respectively, for upward signal and downstream signal are carried out opto-electronic conversion.Second data shaping processing module 43 is connected with the second single fiber bi-directional ONU module 41 and the second single fiber bi-directional wavelength-division OLT module 42 respectively, it is achieved the Clock Extraction of data, signal shaping.
In the G bit passive light net transmission system based on wavelength-division multiplex that the utility model proposes, the first co-/demultiplexer 2 includes: CWDM wave filter, it is achieved the conjunction ripple of signal or solution ripple.
In the G bit passive light net transmission system based on wavelength-division multiplex that the utility model proposes, the second co-/demultiplexer 3 includes: CWDM wave filter, it is achieved the conjunction ripple of signal or solution ripple.
Transmit system based on above-mentioned G bit passive light net based on wavelength-division multiplex, the utility model proposes a kind of G bit passive light net transmission method based on wavelength-division multiplex for this system, as in figure 2 it is shown, comprise the following steps:
Step one: the optical signal received is carried out opto-electronic conversion, the Clock Extraction of data, signal shaping and electro-optic conversion, forms the signal of multiple different wave length；
Step 2: by wavelength-division multiplex, the signal of multiple different wave length being formed one and closes ripple signal, ripple signal is closed in transmission；
Step 3: after receiving conjunction ripple signal, becomes the signal of multiple different wave length by demultiplexing by conjunction ripple signals revivification；
Step 4: the signal of multiple different wave length is carried out opto-electronic conversion, the Clock Extraction of data, signal shaping and electro-optic conversion, is reduced into optical signal.
The G bit passive light net transmission method based on wavelength-division multiplex that the utility model proposes, in step one, optical network signal is converted into CWDM wavelength.
Embodiment
G bit passive light net based on wavelength-division multiplex transmission system in the present embodiment, it is arranged on the circuit between local side optical line terminal and client optical network unit, for transmitting signal on an optical fiber, including: a WDM-PON device 1, for optical signal is carried out wavelength convert.Wherein, first co-/demultiplexer the 2, second co-/demultiplexer 3, conciliate ripple for signal being carried out conjunction ripple.2nd WDM-PON device 4, for carrying out wavelength convert to optical signal.
In the present embodiment, a WDM-PON device 1 includes: the first single fiber bi-directional ONU module the 11, first single fiber bi-directional wavelength-division OLT module 12 and the first data shaping processing module 13.Wherein, the first single fiber bi-directional ONU module 11 is connected with at least one local side optical line terminal, for upward signal and downstream signal are carried out opto-electronic conversion.First single fiber bi-directional wavelength-division OLT module 12 is connected with the first co-/demultiplexer 2, for upward signal and downstream signal are carried out opto-electronic conversion.First data shaping processing module 13 is connected with the first single fiber bi-directional ONU module 11 and the first single fiber bi-directional wavelength-division OLT module 12 respectively, it is achieved the Clock Extraction of data, signal shaping.
In the present embodiment, the 2nd WDM-PON device 4 includes: the second single fiber bi-directional ONU module the 41, second single fiber bi-directional wavelength-division OLT module 42 and the second data shaping processing module 43.Wherein, the second single fiber bi-directional ONU module 41 is connected with the second co-/demultiplexer 3, for upward signal and downstream signal are carried out opto-electronic conversion.Second single fiber bi-directional wavelength-division OLT module 42 is connected with the second co-/demultiplexer 3 and at least one beam splitter 5 respectively, for upward signal and downstream signal are carried out opto-electronic conversion.Second data shaping processing module 43 is connected with the second single fiber bi-directional ONU module 41 and the second single fiber bi-directional wavelength-division OLT module 42 respectively, it is achieved the Clock Extraction of data, signal shaping.
In the present embodiment, the first co-/demultiplexer 2 includes: CWDM wave filter, it is achieved the conjunction ripple of signal or solution ripple.Second co-/demultiplexer 3 includes: CWDM wave filter, it is achieved the conjunction ripple of signal or solution ripple.
The running of the present embodiment G bit passive based on wavelength-division multiplex light net transmission system is as follows:
Step one: the optical signal received is carried out opto-electronic conversion, the Clock Extraction of data, signal shaping and electro-optic conversion, forms the signal of multiple different wave length；
Step 2: by wavelength-division multiplex, the signal of multiple different wave length being formed one and closes ripple signal, ripple signal is closed in transmission；
Step 3: after receiving conjunction ripple signal, becomes the signal of multiple different wave length by demultiplexing by conjunction ripple signals revivification；
Step 4: the signal of multiple different wave length is carried out opto-electronic conversion, the Clock Extraction of data, signal shaping and electro-optic conversion, is reduced into optical signal.
Specifically, from data downstream direction, in office side, four optical line terminals send, to WDM-PON (Wave division multiplexing passive optical network) device 1, the optical network signal that wavelength is 1490nm, by a WDM-PON device 1, the optical network signal wavelength of two optical line terminals is respectively converted into two kinds of different wavelength of A1/B1 (depending on the wavelength of a WDM-PON device 1), carry out closing ripple by the conjunction wave energy (MUX) of the first co-/demultiplexer 2 again, the signal of two kinds of different wave lengths is merged into a road, and is transmitted by optical cable.In user side, first pass through the signal that conjunction ripple signals revivification is two kinds of different wave lengths of A1/B1 that the first co-/demultiplexer 2 is sent by the partial wave function (DMUX) of the second co-/demultiplexer 3, wavelength convert is carried out again by the 2nd WDM-PON device 4, the signal of two kinds of different wave lengths of A1/B1 is reverted to respectively the optical network signal that wavelength is 1490nm sent from optical line terminal, again by the shunt of 1:32, distribute to 32 user's online.
From data uplink direction, in user side, the signal that wavelength is 1310nm is merged into an optical fiber by two shunts by four groups of optical network units, again by the 2nd WDM-PON device 4, two optical network signals are converted to two kinds of different wavelength of A2/B2 (depending on the wavelength of the 2nd WDM-PON device), carry out closing ripple by conjunction wave energy (MUX) equipment of the second co-/demultiplexer 3 again, the signal of two kinds of different wave lengths is merged into a road, and is transmitted by optical cable.In office side, first pass through the signal that conjunction ripple signals revivification is two kinds of different wave lengths of A2/B2 that the second co-/demultiplexer 3 is sent by the partial wave function (DMUX) of the first co-/demultiplexer 2, wavelength convert is carried out again by a WDM-PON device 1, the signal of two kinds of different wave lengths of A2/B2 is reverted to respectively the optical network signal that wavelength is 1310nm sent from optical network unit, communicates with two-way optical line terminal equipment the most again.
Protection content of the present utility model is not limited to above example.Under the spirit and scope conceived without departing substantially from utility model, those skilled in the art it is conceivable that change and advantage be all included in this utility model, and with appending claims as protection domain.
Claims (4)
1. G bit passive light net based on wavelength-division multiplex transmission system, it is arranged on the circuit between local side optical line terminal and client optical network unit, it is characterized in that, including: a WDM-PON device (1), the first co-/demultiplexer (2), the second co-/demultiplexer (3) and the 2nd WDM-PON device (4)；
Wherein, a described WDM-PON device (1) including: the first single fiber bi-directional ONU module (11), the first single fiber bi-directional wavelength-division OLT module (12) and the first data shaping processing module (13)；Described first single fiber bi-directional ONU module (11) is connected with at least one described local side optical line terminal；Described first single fiber bi-directional wavelength-division OLT module (12) is connected with described first co-/demultiplexer (2)；Described first data shaping processing module (13) is connected with described first single fiber bi-directional ONU module (11) and described first single fiber bi-directional wavelength-division OLT module (12) respectively；
Described 2nd WDM-PON device (4) including: the second single fiber bi-directional ONU module (41), the second single fiber bi-directional wavelength-division OLT module (42) and the second data shaping processing module (43)；Described second single fiber bi-directional ONU module (41) is connected with described second co-/demultiplexer (3)；Described second single fiber bi-directional wavelength-division OLT module (42) is connected with described second co-/demultiplexer (3) and described client optical network unit respectively；Described second data shaping processing module (43) is connected with described second single fiber bi-directional ONU module (41) and described second single fiber bi-directional wavelength-division OLT module (42) respectively.
2. G bit passive light net based on wavelength-division multiplex transmission system as claimed in claim 1, it is characterised in that described second single fiber bi-directional wavelength-division OLT module (42) is connected with described client optical network unit by beam splitter (5).
3. G bit passive light net based on wavelength-division multiplex transmission system as claimed in claim 1, it is characterised in that described first co-/demultiplexer (2) including: CWDM wave filter.
4. G bit passive light net based on wavelength-division multiplex transmission system as claimed in claim 1, it is characterised in that described second co-/demultiplexer (3) including: CWDM wave filter.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294612A (en) * | 2017-07-28 | 2017-10-24 | 中航海信光电技术有限公司 | A kind of wavelength-division multiplex optical fiber transceiver module and optical fiber network system |
| WO2020181436A1 (en) * | 2019-03-08 | 2020-09-17 | 华为技术有限公司 | Network node, sink node and wireless access network |
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2015
- 2015-11-24 CN CN201520946340.3U patent/CN205430266U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294612A (en) * | 2017-07-28 | 2017-10-24 | 中航海信光电技术有限公司 | A kind of wavelength-division multiplex optical fiber transceiver module and optical fiber network system |
| WO2020181436A1 (en) * | 2019-03-08 | 2020-09-17 | 华为技术有限公司 | Network node, sink node and wireless access network |
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Address after: 201613 11, 58 East Xiang Wen Road, Shanghai, Songjiang District Patentee after: Shanghai Xinnuo communication technology Limited by Share Ltd Address before: 201611 Shanghai city Songjiang District South Road 1276 Lane 115 No. 2 No. 6 floor Patentee before: Shanghai Sino-Telecom Technology Co., Ltd. |
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